From the Sierra Madre Games Facebook page on Sept. 10th:
The new 2016 games from Sierra Madre Games are on schedule for delivery starting next month! Preorders will be accepted only until the end of this month (Sept).
The assembly of the 2016 Sierra Madre Games, including Pax Renaissance, Bios Genesis, and Khyber Knives, will be finished on September 12. Then they get loaded on a ship, half bound for the USA and half to my warehouse in Germany. It should take 30 days to travel, so hopefully the preorders should start shipping at the end of October or beginning of November. There is also a smaller shipment sent by air-freight direct to the fair at Essen from Oct 13 to 16.
While the Sierra Madre Games website lists October 21st as the earliest ship date, I think this gives us the best idea of the status of things.